Tevatron: top quarks may indicate new particle, need for new physics

Ars Technica: "Even as it's slated for retirement, Fermilab's Tevatron particle collider may be providing its successor, the Large Hadron Collider, with directions to some new physics. Recently, researchers with the Tevatron's CDF detector started discussing results that they submitted to the arXiv at the end of last year. The draft paper suggests that top quark pairs that originate in the proton-antiproton collisions at the Tevatron are showing an odd asymmetry, one that might be explained by a particle that should be detectable by the LHC. The big surprise: it's not one of the ones we expected to find there."